Engine-cooling system.



F. E. KUBE.

ENGINE COOLING SYSTEM.

APPLICATION FILED SEPT. 19, 1913.

Patented May 25, 1915.

3 SHEETS-SHEET I.

WITNESSES F. E. KUBE ENGINE COOLING SYSTEM.

APPLICATION FILED SEPT. 19, 1913 *j, Patented ay 25, 1915.

3 SHEETS-SHEET 2.-

G45 0/7/7465 6 95 Ex/wn/sr WITNESSES l/Z'VEA/TOR ATTORNEYS F. E. KUBE.

ENGINE COOLING SYSTEM. APPLICATION FILED SEPT. 19, 1913.

m m mi H Fawn M M I v w WC W H m E W nn [I I ran are FREDERICK E. KUBE,0F CLINTON, IOWA.

ENGINE-COOLIN G SYSTEM.

I Specification of L etters Patent.

Patented May 25, 1915.

To all 20710722 it may concern Be it known that I, FREDERICK E. KUBE, acitizen of the United States, and a resident of Clinton, in the countyof Clinton and State of Iowa, have invented a new and ImprovedEngine-Cooling System, of which the following is a full, clear, andexact description.

The invention relates to cooling systems for internal combustion enginesof the type having sleeve valves; and the object thereof is to providean inexpensive and eflicient systern of cooling the sleeves. I obtainthis object by providing hollow sleeve valves through which a coolingfluid is made to flow; and also by directing a cooling medium on to thesurface of the sleeve engaged by the piston.

The invention consists of the construction and combination of parts tobe more fully described hereinafter and fully set forth in the claims.

Reference is to be had to the accompanying drawings forming a part ofthis specification, in which like characters indicate correspondingparts, in all the views and in which:

Figure 1 is a plan view of an engine embodying my invention; Fig. 2 is asection on line 22, Fig. 1; Fig. 3 is an enlarged section similar toFig. 2, showing a dilferent position of the sleeve; Fig. 1 is a sectionon line 44=, Fig. 3; and Fig. 5 is a perspective view of the sleeves,sectioned to show the details of construction of the same.

Referring to the drawings, 6 represents a block casting of the cylinderssecured in any suitable way to the crank case 7. The block 6 is providedon one side with an inlet manifold 8; and on the opposite side, with anoutlet or exhaust manifold 9. Passages 10 connect each of the cylindersof the block with the inlet manifold 8; and passages 11, with theexhaust manifold 9. All of the cylinders receive heads 12 cast in asingle block 13. The admission and exhaust of gases to each cylinder iscontrolled by a pair of coacting double-walled sleeves 14 and 15respectively. The outer sleeve 14 is provided with openings 16 adaptedto register with the openings 10 and 11 of the cylinder. The innersleeve 15,is provided with similar openings 17 adapted to register withthe openings 16 of the outer sleeve. The move-' ment of these sleeves,obtained by means of the eccentrics or any other suitable means controlsthe admission and exhaust of the cylinder. The block casting 6, adjace'nt the bottom thereof, is provided at one side with a manifold 18having an inlet 19 screened by a fabric 20; and at the other side, amanifold 21 connected to a fan structure 22. The cylinders of the block6 communicate with the manifold 18 by means of openings 23, and withmanifold 21 by means of openings 24:. Communicating continuously withthe openings 23 and 24: are openings 25 in the outside wall of thehollow sleeve 14. The in ner wall of the hollow sleeve is also providedwith openings 26 adapted always to communicate with openings 27 providedon the outside wall of the inner sleeve 15. That is, the openings 25communicate always with the manifolds 18 and 21, no matter what theposition of the sleeve 14; and similarly the openings 26 and 27 of theinner and outer sleeves register no matter what the relative position ofthe sleeves. The openings 23 and 24 in the manifolds 18 and 21 beingdiametrically opposite, the openings in the inner and outer sleeves arealso diametrically opposite.

To cause the air drawn by the fan 22 through the screen 20 to come incontact with the major surface of the hollow of the sleeves, the sleevesare provided within the hollow with partitions 28, not extendingentirely to the top of the sleeve. These parti tions separate theopenings 25 and 27 so that the air can only pass from the opening 23 tothe opening 24 by passing through the openings 29 formed by thepartitions on the top of the sleeve.

A piston 30 engages the inner sleeve 15 and is interiorly provided withan annular lip 31 forming an annular recess 32. A number of openings 33lead from the bottom of the recess to the outer lateral surface of thepiston. The purpose of these openings will appear hereinafter. Thepiston is connected to the crank shaft by the connecting rod 34:- havinga lateral extension 35 forming a deflector for the stream deliveredthrough the pipe 36 positioned within the crank case (see Fig. 2) andconnected to a pump 37, preferably positioned also within the crank caseand actuated from the crank shaft. The bottom of the crank case 7 isprovided with an extension 38 below the pump, and forms a receptacle forwater 39 and oil 40, where deliver water and oil simultaneouslyto theWhen the connecting rod is in,

pipe 36. position shown in dotted line in Fig. 2, the

stream of water and oil delivered through the pipe 36 will strike theextension and reflect, as indicated in arrows in Fig. 9., until itreaches the curved surface 43 of the piston where it is deflectedto flowinto the annular recess From the annular recess, by means of theopenings 33, it isvconveyed to the inner lateral surface of the innersleeve 15, thereby cooling the sleeve 15 interiorly, and also oiling thesame simultaneousl y. Each of the sleeves is provided with transversereinforcing portions'45 provided intermediate the double walls of thesleeve. An aperture 10 is provided in each of the reinforcements 15. Thesaid apertures 46 in the inner sleeve 15convey the fluid from the innersurface of the sleeve to the outer surface of the same, that is, to thecontacting surfaces of the sleeves 14: and 15, from where the fluid isfurther conveyed by the apertures 46 of the outerslceve 14. to the outersurface of said sleeve, that is, to the contacting surfaces of the saidsleeve 14: with the casing. The said apertures 46 of the twodouble-walled sleeves, therefore, permit of better lubrication betweenthe said sleeve and the casing, and, furthermore, help to cool the saidsleeve by means of the fluid and oil coming from the annular recess 32.The extension 38 of the crank case is separated from the pump and themajor part of the case by means of a screen 44, to prevent solidparticles from passing back into the oil and water. Similarly, thescreen 20 prevents the passage of solid particles with the air drawn bythe fan 22. \Vhile the fan 22 draws. air'continuously through the hollowof the sleeves 1a and15 respectively, the pump 37 cools the innersurface of the sleeve 15 only intermittently; and while thepump 37, asshown in the drawings, is operated continuously, if it is desired it canbe made to operate intermittently just at a time when the connecting rodis in position shown in dotted line in Fig. 2.

It is understood that in place of air, if desiredv water can be drawnthrough the hollow of the sleeves 14: and 15.

It is understood that the engine can be provided with a cooling systemembodying the two, that is, the air drawn between the walls of thesleeve, also the pump supplying the fluid to the sleeves as described;or, if desired the air cooling system can be used without using thecooling system provided within the cylinder, and vice versa.

Having thus described my invention, I

claim as new and desire to secure by Let directing intermittently acooling medium into said recessfrom the crank casing of the engine, saidsleeve having means for conveying the saidfiuid from the inner to theouter surface; and means vfor circulat-- ing a fluid nthe space formedby the" double walls of the sleeve valve. V I 2. In aninternal'comlnlstion engine cooling system, a piston having an innerannusleeve. valve engaging the piston; means for i lar recess forming areceptacle;"a'sleevevalve engaging the piston, said receptacle having anoutlet to the sleevethrough the piston; means associated with the pistonmovement and adapted to direct a cooling medium into said receptaclefrom tbetcrank case of the engine. 1

3. In an internal combustion engine cooling system, a piston having aninner annular recess forming a receptacle; a-sleeve valve engaging thepiston, said receptacle having an outlet to said sleeve through saidpiston; means for causing the circulation of a cooling medium inthecrank case of the engine; and means associated with the piston motionand adapted to come across the circulating medium and direct the'same'into said receptacle, substantially as and for the purpose setforth.

' 4. In an internal combustion engine cooling system, a piston having aninner-annular recess forming a receptacle; a sleeve valve engaging thepiston, said receptacle having an outlet to said sleeve through saidpiston; a pump for forming a jet of a cooling medium in the crank case;and means associated with the movement of the piston and adapted tocause said jetv to be deflected into said receptacle, substantially asand for the purpose set forth.

5. In an internal combustion engine cooling system, a piston having aninner annular' recess forming a receptacle; a sleeve valve engaging thepiston, said receptacle having an outlet to said sleeve through saidpiston; a connecting rod for the piston; a pump for forming a jet of acooling medium in the crank case; and means'carried by the connectingrod and adapted to come across said jet in the crank case and direct thesame into said receptacle, substantially as l teren'gaging sleeves insaid casing, said eas-.

ing having an air inlet and an air outlet; means for exhausting the airoutlet, said sleeves having openings registering with said inlet andoutlet and the casing whereby the air flowing through the inlet of thecasing is passed through the hollow of the sleeve before entering theoutlet of the same, said hollow sleeve having means therein fordirecting the flow of air; a piston engaging one of said sleeves; meanspositioned in the crank case of the engine adapted to form a jet of acooling medium; and means associated with the movement of the pistonadapted to direct the jet to the surface of the sleeve engaged by thepiston.

7. In an internal combustion engine cooling system, a casing having aninlet and an outlet; a hollow sleeve valve engaging said casing andhaving openings adapted always to register with the inlet and outlet ofthe casing; a second hollow sleeve valve engaging the first sleeve valveand having inlets into the hollow always adapted to communicate with theinlet and outlet of the easing; means for causing a fluid to flow fromthe inlet to the outlet of the casing through said sleeves; means in thehollow of said sleeve valve for directing the flow of fluid therein; apiston engaging the second-mentioned sleeve and having an inner annularrecess forming a receptacle, said receptacle having an outlet to thesleeve engaging the piston; a pump for forming a jet of a cooling mediumin the crank case; and means associated with the movement of the pistonand adapted to come across the said jet and deflect the same into thesaid receptacle, substantially as and for the purpose set forth.

8. In an internal combustion engine cooling system, the combination of adoublewalled sleeve valve, a piston engaging said sleeve valve, meansfor causing a fluid to flow through the space formed by the double wallsof the sleeve, means for supplying to said piston a cooling medium, saidpiston having means for conveying said cooling medium to the surfaceengaging the piston, said sleeve having means for conveying the coolingmedium received from said piston to the outer surface of said sleeve.

In testimony whereof I have signed my name to this specification in thepresence of two subscribing witnesses.

FREDERICK E. KUBE.

lVitnesses:

M. G. MULLIGAN, J. T. RAHMANN. v

